Source code of Windows XP (NT5)
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133 lines
3.3 KiB

/*
* wc.c - counts lines, words and chars. A word is defined as a
* maximal string of non-blank characters separated by blanks.
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <process.h>
#include <windows.h>
#include <tools.h>
/*
* options flags
*/
int lflg, wflg, cflg, tflg;
unsigned long sumlines, sumwords, sumchars;
void
usage()
{
fprintf(stderr, "usage: wc [-lwc] [files]\n" );
exit(EXIT_FAILURE);
}
void
wc( fh )
FILE *fh;
{
unsigned long lines, words, chars;
int ch, inword = 0;
lines = words = chars = 0L;
while (1)
{
if ((ch = getc(fh)) == EOF ) break;
++chars;
if ( isspace(ch) )
{
if ( inword )
inword = 0;
if ( ch == '\n' )
++lines;
continue;
}
if ( isalnum(ch) && !inword )
{
inword = 1;
++words;
}
}
if ( lflg ) printf(" %10lu", lines );
if ( wflg ) printf(" %10lu", words );
if ( cflg ) printf(" %10lu", chars );
sumlines += lines;
sumwords += words;
sumchars += chars;
return;
}
__cdecl
main(
int argc,
char **argv
)
{
FILE *fh;
char *p;
SHIFT( argc, argv );
while ( argc > 0 && ( **argv == '-' || **argv == '/' ) )
{
p = *argv;
while (*++p)
{
switch(*p)
{
case 'l':
lflg++;
break;
case 'w':
wflg++;
break;
case 'c':
cflg++;
break;
case '?':
default:
usage();
}
}
SHIFT( argc, argv );
}
if (!(lflg||wflg||cflg)) lflg = wflg = cflg = 1;
if ( argc > 1 ) tflg++; /* print totals */
if ( argc == 0 )
{
wc( stdin );
printf("\n");
}
else
{
while ( argc )
{
if (( fh = fopen( *argv, "rb" )) == NULL )
{
perror( *argv );
SHIFT( argc, argv );
continue;
}
wc( fh );
fclose( fh );
printf ("\t%s\n", *argv );
SHIFT( argc, argv );
}
if ( tflg )
{
if ( lflg ) printf(" %10lu", sumlines );
if ( wflg ) printf(" %10lu", sumwords );
if ( cflg ) printf(" %10lu", sumchars );
printf("\tTotals\n");
}
}
return (EXIT_SUCCESS);
}